Check coupons or create price alert down below. Let’s see what best price is ATM.
Power source: 260mAh battery, Waterproof IPX7, Sonic vibrating 40000 strokes per minute
Aliexpress
I could not find it on Aliexpress. Click here to search by yourself.
Here are coupons that you can use.
Latest coupon and price update (UTC):
Price history and price alert
Do you need price history chart (for all/most countries) for Teeteck SG-949 Sonic Toothbrush With 3 Heads? There we go.
Price records source(s): Gearbest
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).